Archive
Correspondence
Incoming mail (1973)
Letter
Letter
Notification of E.Tyugu’s doctor’s thesis defending.
Date: 09.02.1973
Original document language: russian
Authors: E. A. Cherniavsky
Organizations: Leningrad Electrotechnical Institute
Persons: Enn Tyugu
Addressee: Andrei Petrovich Ershov

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